#股票收益计算
# 初始购买价格 
initial_price_per_share = 15.0 
# 购买股数 
number_of_shares = 5500 
# 涨停天数 
days_of_increase = 15 
# 每日涨停比例（假设为10%） 
increase_rate = 1.1 
# 计算连续涨停后的卖出价格 
final_price_per_share = initial_price_per_share * (increase_rate ** days_of_increase) 
# 计算购买总成本 
total_cost = initial_price_per_share * number_of_shares 
# 计算卖出总金额 
total_sell_amount = final_price_per_share * number_of_shares 
# 计算获利金额 
profit = total_sell_amount - total_cost 
# 保留两位小数 
# 输出结果 
print(f'{profit:.2f}') 